397440051577 has 8 divisors (see below), whose sum is σ = 397856600064. Its totient is φ = 397023585408.

The previous prime is 397440051551. The next prime is 397440051583. The reversal of 397440051577 is 775150044793.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 397440051577 - 2²⁷ = 397305833849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (397440051277) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15669768 + ... + 15695110.

It is an arithmetic number, because the mean of its divisors is an integer number (49732075008).

Almost surely, 2^397440051577 is an apocalyptic number.

It is an amenable number.

397440051577 is a deficient number, since it is larger than the sum of its proper divisors (416548487).

397440051577 is a wasteful number, since it uses less digits than its factorization.

397440051577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41159.

The product of its (nonzero) digits is 3704400, while the sum is 52.

The spelling of 397440051577 in words is "three hundred ninety-seven billion, four hundred forty million, fifty-one thousand, five hundred seventy-seven".